Bug 2535466 (CVE-2026-80274) - CVE-2026-80274 bind: BIND: Denial of Service via crafted DNSSEC reply
Summary: CVE-2026-80274 bind: BIND: Denial of Service via crafted DNSSEC reply
Keywords:
Status: NEW
Alias: CVE-2026-80274
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2535873
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-16 14:33 UTC by OSIDB Bzimport
Modified: 2026-09-17 08:51 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-09-16 14:33:10 UTC 
If a BIND resolver sends a query for a DNSSEC-signed authoritative zone, and the authoritative server replies with a valid wildcard answer and signed NSEC3 proof, followed by an unsigned NSEC at the same owner name, it will trigger an unexpected program exit.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
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